如果将非角膜骨髓干细胞引入到人类角膜能够改变它们的功能，我们也许能够修复由于突变造成的视觉敏锐性的丧失。
If we can change the function of non-corneal bone marrow stem cells by introducing them into human corneas, we can possibly repair the loss of visual sharpness caused by mutations.
然而，仅有一些突变似乎可导致听力丧失，目前还不知道每只小鼠有那种突变。
However, only some of the mutations were likely to cause hearing loss, and it was not known which mutation each mouse had.
突变型p53基因的编码蛋白不但丧失上述功能，甚至出现了促使细胞癌变的作用。
The protein(P53) encoded by mutant p53 gene (mtp53) not only losses these functions, but also make cell malignant transformation.
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